What an amazing world we live in! Almost anything you can imagine can be researched, compared, admired, studied, and in many cases, bought, with the click of a mouse. The Internet has changed our lives, putting a world of opportunity before us.

This textbook for the Cisco Networking Academy CCNA Exploration LAN Switching and Wireless course is a portable reference which features enhanced topic explanations, real-world examples, and graphical presentations.

This new edition incorporates recently improved features to aid instructors and enhance student comprehension. Chapters align with course modules in both name and number, and chapter objectives are stated as questions to encourage students to think about and find answers as they read the chapters.

An essential introduction to the next revolution in computing and how it will affect businesses and consumers.

This book brings together recent advances and presents a comprehensive picture of the scientific study of networks. It includes discussion of computer networks, social networks, biological networks, and others, and an introduction to the mathematics of network theory, including analysis techniques, computer algorithms, and network modeling.

Active Directory stores data about objects such as users and groups in structured data stores and then allows network users and administrators to find and use these data when required.